Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean
Concentrations of zooplankton observed at Station "P" (50°N.L., 145°W.L.,) are less than those in the Northwest Pacific, the Bering Sea, British Columbia coastal waters and the Labrador Sea; about equal to those at Station "M" in the Norwegian Sea; and greater than those in the c...
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Canadian Science Publishing
1961
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crcansciencepubl:10.1139/f61-001 2023-12-17T10:28:09+01:00 Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean McAllister, C. D. 1961 http://dx.doi.org/10.1139/f61-001 http://www.nrcresearchpress.com/doi/pdf/10.1139/f61-001 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 18, issue 1, page 1-29 ISSN 0015-296X General Medicine journal-article 1961 crcansciencepubl https://doi.org/10.1139/f61-001 2023-11-19T13:39:11Z Concentrations of zooplankton observed at Station "P" (50°N.L., 145°W.L.,) are less than those in the Northwest Pacific, the Bering Sea, British Columbia coastal waters and the Labrador Sea; about equal to those at Station "M" in the Norwegian Sea; and greater than those in the central Equatorial Pacific and the Sargasso Sea. Zooplankton abundance at Station "P" appears representative of that in a wide area of the central Gulf of Alaska. A vertical distribution of zooplankton characterized by maxima of concentration from 0–100 metres and from 200–500 m was observed both day and night and in all seasons. Daily means of concentration of surface zooplankton ranged from about 20 g per 1000 m 3 in winter to about 150 in summer. A small autumn maximum was observed. A similar seasonal cycle of abundance occurred down to depths of about 200 m. Below 200 m the amplitude of the seasonal cycle tended to decrease with depth. Vertical hauls captured mainly copepods all year round. Horizontal surface tows revealed a marked seasonal cycle in taxonomic composition. A pronounced diurnal variation in the concentration of surface zooplankton was observed and showed the major features of typical diurnal vertical migration. Night catches of vertical hauls exceeded day catches. Article in Journal/Newspaper Bering Sea Labrador Sea Norwegian Sea Alaska Copepods Canadian Science Publishing (via Crossref) Norwegian Sea Bering Sea Gulf of Alaska Pacific Journal of the Fisheries Research Board of Canada 18 1 1 29 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine McAllister, C. D. Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
topic_facet |
General Medicine |
description |
Concentrations of zooplankton observed at Station "P" (50°N.L., 145°W.L.,) are less than those in the Northwest Pacific, the Bering Sea, British Columbia coastal waters and the Labrador Sea; about equal to those at Station "M" in the Norwegian Sea; and greater than those in the central Equatorial Pacific and the Sargasso Sea. Zooplankton abundance at Station "P" appears representative of that in a wide area of the central Gulf of Alaska. A vertical distribution of zooplankton characterized by maxima of concentration from 0–100 metres and from 200–500 m was observed both day and night and in all seasons. Daily means of concentration of surface zooplankton ranged from about 20 g per 1000 m 3 in winter to about 150 in summer. A small autumn maximum was observed. A similar seasonal cycle of abundance occurred down to depths of about 200 m. Below 200 m the amplitude of the seasonal cycle tended to decrease with depth. Vertical hauls captured mainly copepods all year round. Horizontal surface tows revealed a marked seasonal cycle in taxonomic composition. A pronounced diurnal variation in the concentration of surface zooplankton was observed and showed the major features of typical diurnal vertical migration. Night catches of vertical hauls exceeded day catches. |
format |
Article in Journal/Newspaper |
author |
McAllister, C. D. |
author_facet |
McAllister, C. D. |
author_sort |
McAllister, C. D. |
title |
Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
title_short |
Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
title_full |
Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
title_fullStr |
Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
title_full_unstemmed |
Zooplankton Studies at Ocean Weather Station "P" in the Northeast Pacific Ocean |
title_sort |
zooplankton studies at ocean weather station "p" in the northeast pacific ocean |
publisher |
Canadian Science Publishing |
publishDate |
1961 |
url |
http://dx.doi.org/10.1139/f61-001 http://www.nrcresearchpress.com/doi/pdf/10.1139/f61-001 |
geographic |
Norwegian Sea Bering Sea Gulf of Alaska Pacific |
geographic_facet |
Norwegian Sea Bering Sea Gulf of Alaska Pacific |
genre |
Bering Sea Labrador Sea Norwegian Sea Alaska Copepods |
genre_facet |
Bering Sea Labrador Sea Norwegian Sea Alaska Copepods |
op_source |
Journal of the Fisheries Research Board of Canada volume 18, issue 1, page 1-29 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f61-001 |
container_title |
Journal of the Fisheries Research Board of Canada |
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18 |
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1 |
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1 |
op_container_end_page |
29 |
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1785580184201592832 |